玉米不同种植模式对田间小气候和产量的影响

为了提高玉米对自然资源利用效率,建立合理的种植模式,从而增加单位面积产量。本试验选用中矮杆紧凑型玉米隆平206,在60000株/hm2种植密度下,采用种行株距(50cm×33.35cm,60cm×27.79cm,70cm×23.84cm,80cm×20.84cm)的种植模式,研究其对玉米田间小气候及产量的影响。结果表明:在行距50cm,株距33.35cm时,群体结构较合理,农田小气候中的光照、温度、湿度、风等资源配合较好,各因素在玉米生长的中后期日平均值分别为8571lx、28.1℃、86.6%、0.1038/ms,所形成的田间小气候有利于隆平206的生长和发育,其光合效率最高,干物质积累量最大,单位面积产量也最高,达到8974.5kg/hm2。

EFFECT OF DIFFERENT CROPPING PATTERNS ON FIELD MICROCLIMATE AND YIELDS OF MAIZE

In order to improve the natural resource utilization efficiency of corn and establishing a rational patterns,the field experiments taking the compact dwarf maize variety Longping 206 were conducted to determine the effect of the different cropping patterns on the field microclimate and output with the four spacings type of 50cm×33.35cm、60cm×27.79cm、70cm×23.84cm and 80cm×20.84cm under 60000plants/hm2.The results showed that the optimal density of Longping 206 were spacing 50cm×33.35cm under 60000plants/hm2,the microclimatic factors,such as light,temperature,humidity and wind speed in the fields were well coordinated,the average values were 8571lx,28.1℃,86.6% and 0.1038m/s respectively,and with the highest photosynthesis efficiency and greatest accumulated biomass.The yield per unit area were also highest with 8974.5kg/hm2.